/*
* Druid - a distributed column store.
* Copyright 2012 - 2015 Metamarkets Group Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package io.druid.data.input.impl;
import com.fasterxml.jackson.annotation.JsonCreator;
import com.fasterxml.jackson.annotation.JsonProperty;
import com.google.common.base.Optional;
import com.google.common.base.Preconditions;
import com.metamx.common.parsers.CSVParser;
import com.metamx.common.parsers.ParseException;
import com.metamx.common.parsers.Parser;
import java.util.List;
/**
*/
public class CSVParseSpec extends ParseSpec
{
private final String listDelimiter;
private final List<String> columns;
@JsonCreator
public CSVParseSpec(
@JsonProperty("timestampSpec") TimestampSpec timestampSpec,
@JsonProperty("dimensionsSpec") DimensionsSpec dimensionsSpec,
@JsonProperty("listDelimiter") String listDelimiter,
@JsonProperty("columns") List<String> columns
)
{
super(timestampSpec, dimensionsSpec);
this.listDelimiter = listDelimiter;
Preconditions.checkNotNull(columns, "columns");
for (String column : columns) {
Preconditions.checkArgument(!column.contains(","), "Column[%s] has a comma, it cannot", column);
}
this.columns = columns;
verify(dimensionsSpec.getDimensionNames());
}
@JsonProperty
public String getListDelimiter()
{
return listDelimiter;
}
@JsonProperty("columns")
public List<String> getColumns()
{
return columns;
}
@Override
public void verify(List<String> usedCols)
{
for (String columnName : usedCols) {
Preconditions.checkArgument(columns.contains(columnName), "column[%s] not in columns.", columnName);
}
}
@Override
public Parser<String, Object> makeParser()
{
return new CSVParser(Optional.fromNullable(listDelimiter), columns);
}
@Override
public ParseSpec withTimestampSpec(TimestampSpec spec)
{
return new CSVParseSpec(spec, getDimensionsSpec(), listDelimiter, columns);
}
@Override
public ParseSpec withDimensionsSpec(DimensionsSpec spec)
{
return new CSVParseSpec(getTimestampSpec(), spec, listDelimiter, columns);
}
public ParseSpec withColumns(List<String> cols)
{
return new CSVParseSpec(getTimestampSpec(), getDimensionsSpec(), listDelimiter, cols);
}
}